Part Numbers
RXW-THC-900 • RXW-THC-868 • RXW-THC-922 • RXW-THC-921
HOBOnet Temp/RH Sensor
Solar Powered
From $300.00 USD
A solar-powered wireless sensor that works with the HOBOnet system to monitor air temperature and relative humidity.
Important Information
A complete system requires at least one HOBO RX3000 Remote Monitoring Station, a HOBOnet Wireless Manager, and a HOBOnet Wireless Sensor, OR one HOBO MicroRX Station (which has an integrated HOBOnet Wireless Manager) and a HOBOnet Wireless Sensor. HOBOnet Wireless Repeaters (RXW-RPTR-xxx or RXW-RPTR-B-xxx) can be added to extend the range.
Overview
A solar-powered wireless sensor that works with the HOBOnet system to monitor air temperature and relative humidity. HOBOnet wireless sensors communicate data directly to the HOBO RX3000 or the HOBO MicroRX station, or pass data through other wireless sensors back to the central station. They are preconfigured and ready to deploy, and data is accessed through HOBOlink, Onset's innovative cloud software platform.
Features
Sensor Features
- High accuracy: ± 0.2°C (± 0.36°F) and ± 2.5% RH
- Robust RH sensor withstands extended use in high-humidity environments
Wireless Features
- 900 MHz wireless mesh self-healing technology
- 450 to 600 meter (1,500 to 2,000 feet) wireless range and up to five hops
- Up to 50 wireless sensors or 336 data channels per HOBO RX station
- Simple button-push to join the HOBOnet wireless network
- Onboard memory to ensure no data loss
- Powered by rechargeable AA batteries and built-in solar panel
Specifications
Temperature Sensor
- Measurement Range
-
-40°C to 75°C-40°F to 167°F
- Accuracy
-
±0.25°C from -40° to 0°C±0.45°F from -40° to 32°F±0.20°C from 0° to 70°C±0.36°F from 32° to 158°F±0.25°C from 70° to 75°C±0.45°F from 158° to 167°F
- Resolution
-
0.02°C0.036°F
- Drift
-
<0.01°C per year0.018°F per year
- Response Time (typical, to 90% of change)
-
With RS3-B solar radiation shield: 6 minutes, 30 seconds in air moving 1 m/sec
RH Sensor
- Measurement Range
-
0–100% RH at -40° to 75°C (-40° to 167°F); exposure to conditions below -20°C (-4°F) or above 95% RH may temporarily increase the maximum RH sensor error by an additional 1%
- Accuracy
-
±2.5% from 10% to 90% RH typical to a maximum of ±3.5% including hysteresis at 25°C (77°F); below 10% and above 90% ±5% typical
- Resolution
-
0.01% RH
- Drift
-
<1% per year typical
- Response Time (typical, to 90% of change)
-
With RS3-B solar radiation shield: 30 seconds in air moving 1 m/sec
Wireless Mote
- Operating Temperature Range
-
-25° to 60°C with rechargeable batteries-13° to 140°F with rechargeable batteries-40° to 70°C with lithium batteries-40° to 158°F with lithium batteries
- Radio Power
-
12.6 mW non-adjustable+11 dBm non-adjustable
- Transmission Range
-
Reliable connection to 609.6 m (2,000 ft) line of sight at 3 m (10 ft) high
- Wireless Data Standard
-
IEEE 802.15.4
- Radio Operating Frequencies
-
RXW-THC-922: 916–924 MHz
- Modulation Employed
-
OQPSK (Offset Quadrature Phase Shift Keying)
- Data Rate
-
Up to 250 kbps, non-adjustable
- Duty Cycle
-
<1%
- Maximum Number of Motes
-
Up to 50 wireless sensors or 336 data channels per one HOBO RX station
- Logging Rate
-
1 minute to 18 hours
- Number of Data Channels
-
3
- Battery Type/Power Source
-
Two AA 1.2V rechargeable NiMH batteries, powered by built-in solar panel or two AA 1.5 V lithium batteries for operating conditions of -40° to 70°C (-40° to 158°F)
- Battery Life
-
With NiMH batteries: Typical 3–5 years when operated in the temperature range -20° to 40°Csee Deployment and Mounting), operation outside this range will reduce the battery service life
- Memory
-
16 MB
- Dimensions
-
Cable length: 2 m (6.56 ft)
- Weight
-
Sensor and cable: 110 g (3.88 oz);
- Materials
-
Mote: PCPBT, silicone rubber seal
- Environmental Rating
-
Mote: IP67, NEMA 6
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Compatible items
Solar Radiation Shields
Tripod Parts, Kits and Masts
NIST Setup & Certifications
Batteries
Grounding Wires
Compliance Certificates
Web-based Monitoring Systems - via remote communication
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